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Images related to natural hazards.
Neil Ganju (standing) and Patrick Dickhudt preparing an oceanographic platform to measure wetland sediment transport in Forsythe NWR, New Jersey
Neil Ganju (standing) and Patrick Dickhudt preparing an oceanographic platform to measure wetland sediment transport in Forsythe NWR, New Jersey
Photomicrograph of sample 09RDWES301 - an andesite collected during the Redoubt 2009 eruption. A rock thin section is created by gluing a small piece of rock onto a glass slide, then grinding it down to a thickness of 30 microns (the average human hair is about 100 microns in diameter) so that light shines through it when examined under the microscope.
Photomicrograph of sample 09RDWES301 - an andesite collected during the Redoubt 2009 eruption. A rock thin section is created by gluing a small piece of rock onto a glass slide, then grinding it down to a thickness of 30 microns (the average human hair is about 100 microns in diameter) so that light shines through it when examined under the microscope.
Photographs showing equipment used during bathymetric and topographic surveys along the Columbia River littoral cell, Washington and Oregon.
Photographs showing equipment used during bathymetric and topographic surveys along the Columbia River littoral cell, Washington and Oregon.
USGS scientist Sara Zeigler records habitat characteristics in iPlover at an ‘exclosed’ nest. On some beaches, managers erect netting around nests to protect eggs/chicks and adults from predators, allowing movement of chicks and parents to and from the nest but excluding predators
USGS scientist Sara Zeigler records habitat characteristics in iPlover at an ‘exclosed’ nest. On some beaches, managers erect netting around nests to protect eggs/chicks and adults from predators, allowing movement of chicks and parents to and from the nest but excluding predators
Groundwater data were collected in the spring and fall of 2008 from three sites representing different geological settings and biogeochemical conditions within the surficial glacial aquifer of Long Island, NY.
Groundwater data were collected in the spring and fall of 2008 from three sites representing different geological settings and biogeochemical conditions within the surficial glacial aquifer of Long Island, NY.
Sandy Brosnahan performing first solo flight as a USGS certified drone pilot. There are multiple exciting applications for drone imagery including erosion studies and physical changes to coastal ecosystems over time.
Sandy Brosnahan performing first solo flight as a USGS certified drone pilot. There are multiple exciting applications for drone imagery including erosion studies and physical changes to coastal ecosystems over time.
Large submarine slides off southern California (outlined in small white dots). Low-resolution bathymetry shown in light grey (approximately 100 meters/pixel). High-resolution bathymetry shown in darker grey (less than 20 meters/pixel).
Large submarine slides off southern California (outlined in small white dots). Low-resolution bathymetry shown in light grey (approximately 100 meters/pixel). High-resolution bathymetry shown in darker grey (less than 20 meters/pixel).
Researchers survey Elwha River elevation and depths. Clockwise from upper left: setting up a traditional survey instrument above the river; measuring river depths from a kayak with sonar and GPS; walking the beach with GPS backpacks; and determining offshore depths using a personal watercraft with GPS and sonar.
Researchers survey Elwha River elevation and depths. Clockwise from upper left: setting up a traditional survey instrument above the river; measuring river depths from a kayak with sonar and GPS; walking the beach with GPS backpacks; and determining offshore depths using a personal watercraft with GPS and sonar.
Schematic showing how sediment on the seafloor moves in response to a force created by the combined action of tides, ocean waves, and wind-driven currents.
Schematic showing how sediment on the seafloor moves in response to a force created by the combined action of tides, ocean waves, and wind-driven currents.
Shaking during the 1964 Alaska earthquake was felt as far away as Seattle, Washington, and its tsunamis caused 129 fatalities and about \$2.3 billion in property losses (2013 dollars).
Shaking during the 1964 Alaska earthquake was felt as far away as Seattle, Washington, and its tsunamis caused 129 fatalities and about \$2.3 billion in property losses (2013 dollars).
Seafloor offshore of Point Estero (PE) showing east (EH) and west (WH) strands of the Hosgri fault zone. Arrow points to a seafloor slope (a 12,000 year old shoreline) that has been offset by the east Hosgri strand, indicating a slip rate of about 2.6 millimeters per year.
Seafloor offshore of Point Estero (PE) showing east (EH) and west (WH) strands of the Hosgri fault zone. Arrow points to a seafloor slope (a 12,000 year old shoreline) that has been offset by the east Hosgri strand, indicating a slip rate of about 2.6 millimeters per year.
On May 24, 2016, two new flows broke out on the flanks of the Pu‘u ‘Ō‘ō cone on Kīlauea Volcano's East Rift Zone. The silvery sheen of new lava erupting from the northern 61f breakout (center) and eastern 61g breakout (upper left) stands out in contrast to the older flows on and around Pu‘u ‘Ō‘ō (right).
On May 24, 2016, two new flows broke out on the flanks of the Pu‘u ‘Ō‘ō cone on Kīlauea Volcano's East Rift Zone. The silvery sheen of new lava erupting from the northern 61f breakout (center) and eastern 61g breakout (upper left) stands out in contrast to the older flows on and around Pu‘u ‘Ō‘ō (right).
This building housed the Kīlauea cyclorama at the Chicago World's Fair in1893. Positioned above the entrance to the cyclorama was a statue of Pele, the Hawaiian volcano goddess, standing on a lava flow and holding a flame. For more info, please see https://chicagology.com/columbiaexpo/fair052/.
This building housed the Kīlauea cyclorama at the Chicago World's Fair in1893. Positioned above the entrance to the cyclorama was a statue of Pele, the Hawaiian volcano goddess, standing on a lava flow and holding a flame. For more info, please see https://chicagology.com/columbiaexpo/fair052/.
USGS ocean engineer Gerry Hatcher with the camera system he helped create for recording the precise time and geographic location of each air photo it takes. The system is mounted in the cargo compartment of a Cessna 182R airplane and takes photos through a window cut into a removable cargo door (right).
USGS ocean engineer Gerry Hatcher with the camera system he helped create for recording the precise time and geographic location of each air photo it takes. The system is mounted in the cargo compartment of a Cessna 182R airplane and takes photos through a window cut into a removable cargo door (right).
This map shows recent changes to Kīlauea's East Rift Zone lava flow field. The area of the active flow field as of November 29 is shown in pink, while widening and advancement of the active flow as of December 14, based on satellite imagery, is shown in red. Older Pu‘u ‘Ō‘ō lava flows (1983-2016) are shown in gray.
This map shows recent changes to Kīlauea's East Rift Zone lava flow field. The area of the active flow field as of November 29 is shown in pink, while widening and advancement of the active flow as of December 14, based on satellite imagery, is shown in red. Older Pu‘u ‘Ō‘ō lava flows (1983-2016) are shown in gray.
December 13 - 14, 2016 Long Valley Caldera earthquake swarm recorded on instrument MDH1 webicorder. Swarm begins at 23:28 PST.
December 13 - 14, 2016 Long Valley Caldera earthquake swarm recorded on instrument MDH1 webicorder. Swarm begins at 23:28 PST.
In July 2016, lava erupted from Kīlauea Volcano's East Rift Zone reached the ocean for the first time in almost three years, building the Kamokuna lava delta, shown here in October 2016.
In July 2016, lava erupted from Kīlauea Volcano's East Rift Zone reached the ocean for the first time in almost three years, building the Kamokuna lava delta, shown here in October 2016.
This video, at 50x speed to illustrate the motion of the lava lake surface, shows typical lava lake activity within Halema‘uma‘u Crater. Lava upwells in the northern portion of the lake (left side of image), with most of the lake surface flowing towards the south (right side). Spattering is active within a small grotto at the southeast margin of the lake.
This video, at 50x speed to illustrate the motion of the lava lake surface, shows typical lava lake activity within Halema‘uma‘u Crater. Lava upwells in the northern portion of the lake (left side of image), with most of the lake surface flowing towards the south (right side). Spattering is active within a small grotto at the southeast margin of the lake.
As you watch this VIDEO CLIP, note the rocky ledge (yellow arrow) at the bottom of the webcam image. At 6:58 a.m., HST, today, this large slab of the summit vent wall, located directly below HVO's HMcam, collapsed.
As you watch this VIDEO CLIP, note the rocky ledge (yellow arrow) at the bottom of the webcam image. At 6:58 a.m., HST, today, this large slab of the summit vent wall, located directly below HVO's HMcam, collapsed.
USGS Hawaiian Volcano Observatory geologist Frank Trusdell (right) discusses methodologies for lava flow hazard assessment in Hawaii with a volcanology colleague from Ethiopia during the recent Volcano Observatory Best Practices Workshop in Vancouver, Washington.
USGS Hawaiian Volcano Observatory geologist Frank Trusdell (right) discusses methodologies for lava flow hazard assessment in Hawaii with a volcanology colleague from Ethiopia during the recent Volcano Observatory Best Practices Workshop in Vancouver, Washington.
The U.S. Geological Survey Hawaiian Volcano Observatory and the National Park Service Jaggar Museum are perched together near the summit of Kīlauea, about 1.7 km (~1.1 mi) from the lava lake in Halema‘uma‘u, producing a plume in the background.
The U.S. Geological Survey Hawaiian Volcano Observatory and the National Park Service Jaggar Museum are perched together near the summit of Kīlauea, about 1.7 km (~1.1 mi) from the lava lake in Halema‘uma‘u, producing a plume in the background.